V6NetHandle: NET6-2606-A600-FFFF-1 OrgID: WEBTR-11 Parent: NET6-2606-A600-1 NetName: WEBTRENDS-2606-A600-FFFF NetRange: 2606:A600:FFFF:: - 2606:A600:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: reallocation OriginAS: 11944 Comment: Static downstream customer allocation RegDate: 2017-03-02 Updated: 2017-03-02 Source: ARIN OrgID: WEBTR-11 OrgName: Webtrends CanAllocate: Street: 555 SW Oak St., Street: Suite #300 City: Portland State/Prov: OR Country: US PostalCode: 97204 RegDate: 2017-03-02 Updated: 2017-03-02 OrgAdminHandle: OTISR-ARIN OrgAbuseHandle: OTISR-ARIN OrgTechHandle: OTISR-ARIN Source: ARIN
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.